Microwave Engineering Europe - January/February 2008 - (Page 39)

PRODUCTS 39 Digital PMR processor with 4-Level FSK operation and GMSK functionality The CMX7143 digital PMR (dPMR) processor from CML Microcircuits features 4-Level FSK operation and GMSK functionality. This highly integrated and adaptable multimode wireless data modem IC is built on the company’s proprietary FirmASIC component technology. Typical applications include Machine-to-Machine (M2M), Software Defined Radio (SDR), Point-to-Point telemetry systems, and traffic location systems, amongst others. CML’s Function Image files configure the CMX7143’s subsystems, which are uploaded during device initialization when the product’s function and feature set are defined. A Function Image can be loaded automatically from an RF DAC targets DOCSIS 3.0 can directly synthesize multi-channel QAM signals The MAX5881 from Maxim Integrated Products claims to be the industry’s first 12-bit, 4.3 GS/s digital-to-analog converter (DAC) that can directly synthesize multichannel QAM signals in the 50-MHz to 1000-MHz cable downstream band. It meets the requirements of DataOver-Cable Service Interface Specification (DOCSIS) 3.0 for up to four contiguous channels per RF port. In addition to enabling a fully digital cable upconversion solution, the MAX5881 simplifies the RF portion of the design, which results in a lower cost per QAM channel than analog solutions, according to Maxim. This is said to eliminate the need for many of the components used in the traditional analog solution such as an upconversion modulator or mixer, a downconversion mixer, fixed and agile frequency synthesizers, amplifiers, and filters. Providing higher density, lower power, and lower cost per channel than the traditional analog approach, the DAC is suitable for DOCSIS 3.0compliant edge QAM devices and cable modem termination systems (CMTS). The MAX5881 operates from 3.3-V and 1.8-V supplies, and consumes 1.2 W at 4.0 GS/s. It is fully specified over the 0°C to +70°C commercial temperature range and is offered in an 11 x 11 mm, RoHS-compliant, 169-ball CSBGA package. www.mwee.com/205907366 external EEPROM or host microcontroller. Features include fast data acquisition, 4.8-kbits/s to 19.2 kbits/s data rates, Automatic Frame Sync Detection (AFSD), flexible raw and packet data modes, soft decision decoding, RSSI processing (for Listen Before Transmit Applications) and a C-BUS serial interface to the host microcontroller. www.mwee.com/205907381 Ku- and Ka-band power amplifiers deliver high linearity for VSAT and broadband satellite Endwave Corporation has released two power amplifiers that deliver leading power and linearity performance for Ku-Band VSAT networks and emerging broadband satellite communications at Ka-Band. The Ku-band module features 40-dB (min) gain, 0.5-dB (max) gain flatness, typical output power at P1dB of +37 dBm, output 3rd order intercept of +47 dBm (typ), and DC current of 2.6 A at +15 VDC. The Ka-band module features 27-dB (min) gain, 1.0-dB (max) gain flatness, typical output power at P1dB of +36 dBm, output 3rd order intercept of +43 dBm (typ), and DC current at +15 VDC of 5.6 A. The noise figures of these transmit power amplifiers come in at 4.5 dB (max) at Ku-band and 6.0 dB (max) at Ka-band. All units have a maximum VSWR of 2.0:1, without the use of RF input or RF output isolators. These parts are also available in a bench-top 19 inch rack-mount configuration for instrumentation applications. In this form-factor, the rackmount units operate off 120 to 240 VAC and include all the necessary AC-to-DC conversion, power line filtering and internal conditioning. Other add-on options include customizable bias features, optional linear variable attenuators for power control, on-board output power monitors and built-in temperature compensation. www.mwee.com/205907436 Microwave Engineering ● January/February 2008 ● www.mwee.com 039_MWEE.indd Sec1:39 25/01/08 11:31:42 http://www.mwee.com/205907366 http://www.mwee.com/205907381 http://www.filter-solutions.com http://www.filter-solutions.com http://www.mwee.com/205907436 http://www.mwee.com

Table of Contents Feed for the Digital Edition of Microwave Engineering Europe - January/February 2008

Microwave Engineering Europe - January/February 2008 Contents News Comment Radio: Raising the Bar for the Radio: Making 802.11n Work Cover Feature: The RF-System-In-Package Trend - Efficient Design with Advanced Design System 2008 Wireless Sensor Networks: The Zigbee PRO Feature Set: More of a Good Thing Very Fast Measurements of Wireless Devices with Small Antennas in Reverberation Chambers WiMAX Update 2008 Bridging the Gap from the CMOS DSP to the Antenna in OFDM Systems Products Calendar

Microwave Engineering Europe - January/February 2008

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